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System and method to apply topping materials to print products

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System and method to apply topping materials to print products


Disclosed are systems and methods, including a method that includes depositing a curable adhesive onto a first surface of a substrate in a pre-determined pattern, placing topping material onto the substrate with the deposited adhesive, and applying UV energy to the substrate including the deposited adhesive and the placed topping material to cause curing of the deposited adhesive.

Browse recent Scodox Ltd. patents - Rosh Ha'ain, IL
Inventors: Eli Grinberg, Kobi Bar
USPTO Applicaton #: #20120269983 - Class: 427470 (USPTO) - 10/25/12 - Class 427 
Coating Processes > Direct Application Of Electrical, Magnetic, Wave, Or Particulate Energy >Electrostatic Charge, Field, Or Force Utilized >Superposed Diverse Or Multilayer Similar Coatings Applied

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The Patent Description & Claims data below is from USPTO Patent Application 20120269983, System and method to apply topping materials to print products.

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CROSS-REFERENCE TO RELATED APPLICATION

The present application claims benefit and priority to U.S. Provisional Patent Application No. 61/282,136, filed Dec. 22, 2009, and entitled “METHOD OF APPLYING GLITTER TO A SUBSTRATE,” the content of which is hereby incorporated by reference in its entirety.

BACKGROUND

The present disclosure is directed to producing print products (e.g., cards, printed literature, etc.), and more particularly to a system and method to apply topping materials, for example, glitter materials, to print products.

Glitter, metallic and glass powders that reflect light are widely used for decorative applications such as posters, birthday cards and the like. Conventionally, a self-drying, water based, plastic adhesive is silk screened or rolled onto a substrate, glitter powder is poured, and the substrate is then tipped and shaken and/or vacuumed to remove excess glitter. Such techniques tend to result in low resolution print products.

SUMMARY

In some embodiments, the present disclosure is directed to providing a method for applying glitter to a substrate, including digitally printing an adhesive onto the substrate to form a pattern, pouring glitter over the substrate and adhering the glitter to the pattern, exposing glitter coated adhesive to pattern to UV light, and removing excess glitter.

Optionally, removal of excess glitter comprises at least one of the group consisting of vacuuming, tipping and tamping the substrate. Optionally, the procedures implemented may include pressing the glitter into the adhesive pattern layer using, for example, a roller or plate.

Optionally the procedures implemented may include applying an over-layer of polymer onto the glitter layer. Optionally, the glitter layer includes particles of adhesive. Typically the over-layer is applied by a technique selected from the group consisting of digital printing, lamination, silk screening, brushing and rolling. In some embodiments, the over layer is a thermoset that is cured by exposure to UV light.

In some embodiments, a decorated substrate comprising a layer of glitter applied to a substrate with a digitally printed UV curable adhesive is provided.

The systems and methods described herein are advantageous over conventional systems and methods for adding topping materials (e.g., glitter) to media in that by using, for example, the UV cured thermoset adhesives the glitter better adheres to the adhesive and/or substrate than with regular water based glues. Where a sealing layer is applied onto the glitter layer, the results are further improved.

Thus, in one aspect, a method is disclosed. The method includes depositing a curable adhesive onto a first surface of a substrate in a pre-determined pattern, placing topping material onto the substrate with the deposited adhesive, and applying UV energy to the substrate including the deposited adhesive and the placed topping material to cause curing of the deposited adhesive.

Embodiments of the method may include any of the features described in the present disclosure, including any of the following features.

The topping material may be a glitter material.

The method may further include removing excess topping material not adhered to the deposited adhesive by performing one or more of, for example, vacuuming the excess topping material, tipping the substrate in order to cause at least some loose non-adhered topping material be removed, and/or tamping the substrate.

The method may further include facilitating adhesion of the topping material to the deposited adhesive by performing one or more of, for example, a) placing topping material comprising melted powder with solid powder, b) applying a magnetic field under the substrate to cause metallic-based topping material to be subjected to a magnetic force directed towards the substrate, c) applying air pressure onto the first surface of the substrate including the deposited adhesive and the placed topping material, d) generating an electrostatic field under the substrate to cause metallic-based topping material to be subjected to a magnetic force directed towards the first surface of the substrate, e) pressing the placed topping material to the adhesive deposited on the substrate using one or more nipping rollers, and/or f) using and curing exothermal adhesives to cause the release of heat from the exothermal adhesive to melt the topping material.

The method may further include applying an over-layer of polymer onto a layer of the placed topping material. The over-layer may be applied by a technique selected from the group consisting of digital printing, lamination, silk screening, brushing and rolling. The over-layer may be a thermoset that is cured by exposure to the applied UV energy.

Depositing the adhesive may include digitally printing the curable adhesive using a digital inkjet.

The method may further include pre-curing the curable adhesive to initiate the curing process of the adhesive and manipulate a viscosity level of the curable adhesive.

The method may further include applying infrared energy to the substrate including the deposited adhesive and the placed topping material.

The curable adhesive may include one or more of, for example, a radical type adhesive and a cationic adhesive.

The method may further include removing contaminants prior to the placing of the topping material by performing one or more of, for example, vacuuming the contaminants, tipping the substrate in order to cause at least some of the contaminants to be removed, and/or tamping the substrate.

In another aspect, a system is disclosed. The system includes an adhesive depositing machine to deposit a curable adhesive onto a first surface of a substrate in a pre-determined pattern, a placement device to place topping material onto the substrate with the deposited adhesive, and a UV energy source to apply UV energy to the substrate including the deposited adhesive and the placed topping material to cause curing of the deposited adhesive.

Embodiments of the system may include any of the features described in the present disclosure, including any of the features described above in relation to the method and the features described below, including any one of the following features.

The system may further include one or more devices to facilitate adhesion of the topping material to the deposited adhesive by performing one or more of, for example, a) placing topping material comprising melted powder with solid powder, b) applying a magnetic field under the substrate to cause metallic-based topping material to be subjected to a magnetic force directed towards the substrate, c) applying air pressure onto the first surface of the substrate including the printed adhesive and the placed topping material, d) generating an electrostatic field under the substrate to cause metallic-based topping material to be subjected to a magnetic force directed towards the substrate, e) pressing the placed topping material to the adhesive deposited on the substrate using one or more nipping rollers, and/or f) using and curing exothermal adhesives to cause the release of heat from the exothermal adhesive to melt the topping material.

The UV energy source may includes one or more of, for example, a UV fluorescent lamp, a UV LED device, and a UV laser devices.



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stats Patent Info
Application #
US 20120269983 A1
Publish Date
10/25/2012
Document #
13261223
File Date
10/01/2010
USPTO Class
427470
Other USPTO Classes
118623
International Class
/
Drawings
6



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